Upright sign holder



FIG. 1 is a perspective view of an upright sign holder showing our new design;

FIG. 2 is an end elevational view thereof from a front end, the rear end elevational view being a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof, with a right side elevational view being identical thereto; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for an upright sign holder, as shown and described. 